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SCORPION-xisa [38]
3 years ago
7

Giải phương trình X^2 +2x-3=?

Mathematics
1 answer:
Jobisdone [24]3 years ago
6 0

\implies {\blue {\boxed {\boxed {\purple {\sf { \:(x - 1)(x + 3) }}}}}}

\large\mathfrak{{\pmb{\underline{\orange{Step-by-step\:explanation}}{\orange{:}}}}}

{x}^{2}  + 2x - 3

=  {x}^{2}  + 3x - x - 3

Taking x as common from first two terms and 1 from last two terms, we have

= x(x + 3) - 1(x + 3)

Taking the factor (x+3) as common,

= (x - 1)(x + 3)

\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}

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m_a_m_a [10]
We know that

The square root property<span> is one method that is used to find the solutions to a quadratic equation.  This method involves taking the square roots of both sides of the equation.  
</span>(x – 3)² – 32 = 17-------> (x – 3)² = 17+32-----------> (x – 3)² = 49
(x – 3)² = 7²--------> <span>will take the square root of each side
</span>so
√(x – 3)²=(+-)√7²------> <span>notice the use of the </span> sign (+-), this will give us both a positive and<span>  a negative root
</span>
then

x-3=7--------> x=10
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the answer Part a) is
x=10
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Part b) Explain why the given equation has two solutions.

the answer part b) is
Because exist<span> the possibility of two roots for every square root, one positive and one negative</span>
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3 years ago
If you have a slope of 1/3,what would you do on a graph?
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Answer:

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Answer:

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Translated...

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